HDFS_NAMENODE_USER, HDFS_DATANODE_USER & HDFS_SECONDARYNAMENODE_USER not defined

Question

I am new to hadoop.
I\'m trying to install hadoop in my laptop in Pseudo-Distributed mode.
I am running it with root user, but I\'m getting the error below.

Answer 1

just do what it asks you:

export HDFS_NAMENODE_USER="root"
export HDFS_DATANODE_USER="root"
export HDFS_SECONDARYNAMENODE_USER="root"
export YARN_RESOURCEMANAGER_USER="root"
export YARN_NODEMANAGER_USER="root"